Yellow Advisory - Frost
10:16 p.m. EDT Thursday 17 September 2026

Impact Level: Moderate

Forecast Confidence: High


Patchy frost is expected early Friday morning as temperatures drop to near freezing.

Damage to plants, trees, and crops is possible.

Take preventative measures to protect cold-sensitive plants, trees, and crops. Cover up plants, especially those in frost-prone areas.

Please continue to monitor alerts and forecasts issued by Environment Canada. To report severe weather, send an email to ONstorm@ec.gc.ca or post reports on social media using #ONStorm.

In effect for:
  • Wawa - Pukaskwa Park

Ontario Radar
 EC Short Term Weather Forecast
Tonight
Chance of showers (30%)
Chance of showers
Min: 2°C
Fri, 18 Sep
Sunny
Sunny
Max: 15°C
Night
Clear
Clear
Min: 2°C
Sat, 19 Sep
Chance of showers (30%)
Chance of showers
Max: 16°C
Night
Chance of showers (30%)
Chance of showers
Min: 6°C
Sun, 20 Sep
A mix of sun and cloud
A mix of sun and cloud
Max: 15°C
Night
Clear
Clear
Min: 2°C
Click here for full local forecast

METRIC | IMPERIAL
Updated: 09/18/2026 @ 4:20:00 am  
Temperature & Conditions in Michpicoten Mission (Wawa) Temperature & Conditions in Michipicoten Harbour
Currently Outside: Colder 1.9°C than last hour.

5.6°C

Feels like :  5°C
Cold
24-hr difference 6.2°C -6.2°CColder 6.2°C than yesterday at this time.
Night time, Dry
Wind from N Wind:  N   5.1
Gusting to : 6.4
High Today
11.0°C
12:41am
Low Today
5.6°C
4:19am
Current Rain Rain:
0.0 mm
Rec* High
26.3°C
2019
Rec* Low
-2.8°C
2008
Current conditions in Michipicoten Mission Click on image for larger view
September
Average
13.1°C
* Records from this station since 2006
Currently Outside: Colder 0.8°C than last hour.

8.7°C

Feels like :  9°C
Cool
24-hr difference 2.6°C -2.6°CColder 2.6°C than yesterday at this time.
---
Wind:  ENE   2.0
Gusting to : 3.2
High Today
11.6°C
1:10am
Low Today
8.7°C
4:18am
Current Rain Rain:
0.0 mm
Rec* High
24.6°C
2019
Rec* Low
-0.6°C
2020
Current conditions in Michipicoten Harbour </br> Courtesy of Anderson Fisheries & WAWA Digest
×
Click on image for larger view
September
Average
13.8°C
* Records from this station since 2016
Dew Point Wind (Mission) Liquid Precipitation Wind (Harbour)
Dew Point: 3.9°C
In Last Hour: Decreased 1.4°C since last hour. -1.4°C
High Dew
Point:
8.8°C
at 12:00 AM
Low Dew
Point:
3.9°C
at 4:19 AM
Wetbulb: 4.8°C
Currently: N  at
5.1 km/h
Gusting To: 6.4
Max Gust Today:  at
18.5 km/h 12:35am
1Hr Average: 1.9 km/h
Max Gust
This Month:
54.8 km/h
on  Sep 12
Wind Run Today: 7.43 km
Mission Harbour
0.00 mm        Today: 0.00 mm
0.00 mm        Yesterday: 0.00 mm
7.8 mm        Last 7 Days: 7 mm
11.20 mm        September Rain: 12.00 mm
84.6 mm        September Avg: 96 mm
Under 73.4 mm for the month -73.4 mm        Diff from Avg: Under 84 mm for the month -84 mm
478.8 mm        Rain Season:1 427.0 mm
601.8 mm        Last YTD Rain:1 478 mm
9/15/2026
at 1:14 PM
       Last Rain
       Time/Date:
9/16/2026
at 6:36 AM
120        Rain days in 2026 104
7        Rain days in September 9
2        Days since last rain 2
Currently: ENE  at
2.0 km/h
Gusting To: 3.2
Max Gust Today:  at
18.5 km/h 1:11am
1Hr Average: 3.8 km/h
Max Gust
This Month:
64.3 km/h
on  Sep 15
Wind Run Today: 15.39 km
Humidity Wind Chill (Mission) Wind Chill (Harbour)
Humidity: 89 %
In Last Hour: Increased 3% since last hour. +3%
High
Today
89%
at 4:08 AM
Low
Today
80%
at 1:41 AM
Current: 4.7°C
Today: 4.7°C   at 4:19am
Yesterday: 7.4°C
Record: -51.1°C
27/01/1986
Current: 8.7°C
Today: 7.9°C   at 4:11am
Yesterday: 8.9°C
Record: -51.1°C
27/01/1986
Heating Degree Days Lightning Strikes Barometer Sun/Moon
Today: 1.3
September: 47.5
2026 to Date: 3719.3
Cooling Degree Days
2026 to Date: 10.4
Last Min: 0
Last 30 Mins: 0
Last 60 Mins: 0
Last 12 Hrs: 0
September: 0
2026 to Date: 0
Last
Strike:
Last Bearing: 0
Last Distance: 0 km
Mission Harbour
Rising 0.6 °C/hr 1028.1 hPa        Current: Rising 0.8 °C/hr 1027.4 hPa
Rising slowly        In Last Hour: Rising slowly
1028.2
at 4:12 AM
       High
       Today:
1027.4
at 4:05 AM
1025.7
at 12:00 AM
       Low
       Today:
1025.3
at 12:00 AM
Daylight
Thu: 12 hrs 26 min 0 sec
Today: 12 hrs 22 min 34 sec
Sat: 12 hrs 19 min 7 sec graph 51.5% 48.5% 3 min 26 sec shorter
than yesterday
Waxing Crescent
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Waxing Crescent, Moon at 6 days in cycle
45% Illuminated
Fire Index
Solar Summary UV Summary/Forecast
Fire Weather Index: LOW LOW
0 out of 31
High Yest:   940.0 @  1:32pm
Today: 00:00  
Month:  90:52 Hrs
Rise: 7:20 am  
Set:  7:45 pm
High Yest:   2.2 @  8:03am
  None  n/a   
  None  n/a   
Almanac Irrigation Index5 All Time Records Cloud Level
Currently: Early Morning
YTD Avg Temp: 4.0°C
Full Moon: September 26 2026
New Moon: 15:51 UTC October 10 2026
Sunrise:  
Sunset:  
Moonset:  
Moonrise:  
Updated at Midnight
Current ET: 0.2 mm    
7-Days Rain: 7.8 mm    
7-Days ET: 15.4 mm    
7-Day: -7.6 mm 7.6 mm water in deficit of what evaporated in last 7 days.
September: -27.1 mm 27.1 mm water in deficit of what evaporated this month.
HIGHS: LOWS:
33.9°C
02/06/2023
-50.0°C
11/02/1981
Daytime Records
    33.1°C
18/07/1991
  -36.7°C
12/02/1981
Nighttime Records
  25.4°C
18/07/1991
-50.0°C
11/02/1981
ICN:1 | ISS:Ok | CON:4.4 | RCP:98%
ICN:1 | ISS:Ok | CON:4.7 | RCP:100%
1 Rain season: Jan 1st to Dec 31st.    4 Updated at Noon Central Time.
5 Estimated amount of water needed to replace the water used by plants and evaporation from the past week.
(Negative numbers mean amount of water needed, positive numbers mean excess water is present.)
 EC Weather Forecast  -   Outlook Tonight & Fri, 18 Sep
Tonight
Chance of showers (30%)
Chance of showers
Min: 2°C
EC forecast: Partly cloudy. 30 percent chance of showers early this evening. Clearing this evening. Low plus 2 with risk of frost.
Fri, 18 Sep
Sunny
Sunny
Max: 15°C
EC forecast: Sunny. Wind northeast 20 km/h becoming light late in the morning. High 15. UV index 5 or moderate.
V7.20 Script by: Matthew Romer Wawaweather.net




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